HG323DAC (Netlink) — IPv6 works on WAN but never reaches LAN devices (RA not broadcasting)

  • Thread starter Thread starter jamesmukal
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Location
Kottayam , Kerala
ISP
Railwire
'm having an issue with IPv6 on my connection. Details below:


Device: Netlink HG323DAC (2GE+1POTS+WiFi5 XPON HGU)Firmware Version: V2.1.08-250310Hardware Version: V4.1PON


Issue:WAN IPv6 connects fine — the router gets a valid global IPv6 address via PPPoE(confirmed working: I dialed PPPoE directly from Windows and got a proper IPv6address that way too, so the ISP-side IPv6 service itself is fine).


However, devices on my LAN (PC, phone, etc.) never receive a global IPv6 address —they only get a link-local (fe80::) address. I've confirmed via packet capture /netsh route tables that the router is not sending any Router Advertisement (RA)packets on the LAN interface at all, even though:


  • RA Enable is set to "on" in Network > LAN > RA
  • LAN Prefix Delegation is set to "WANDelegated"
  • I've tried both SLAAC (AdvManagedFlag: off) and DHCPv6-Stateful(AdvManagedFlag: on, DHCPv6 Mode: Enable) — neither results in any RAreaching connected devices
  • Full router reboots were performed after each config change

This looks like the RA/radvd service on the router isn't actually starting orbroadcasting, despite the web UI reporting the settings as active — possibly afirmware bug in V2.1.08-250310.
 
It's also possible you're not actually getting a prefix, only a wan link v6.
 
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